About: Cyclotron turnover

An Entity of Type: Thing, from Named Graph: http://dbpedia.org, within Data Space: dbpedia.org

Cyclotron turnover is one of two phenomena due to which the power spectrum of synchrotron radiation decreases at very low frequencies. The other is synchrotron self-absorption. While the synchrotron self-absorption is determined from detailed balance, cyclotron turnover occurs when the assumptions of synchrotron radiation are violated. When a charged particle moves in a magnetic field, its orbit is a helix, and its velocities can be divided into two independent components: uniform velocity parallel to the axis of the helix and rotation about the axis. Synchrotron radiation requires that both velocities be ultra-relativistic, but if the velocity parallel to the axis is relativistic and the rotation is not, then the spectrum would simply be that of a Doppler-shifted cyclotron radiation, and

Property	Value
dbo:abstract	Cyclotron turnover is one of two phenomena due to which the power spectrum of synchrotron radiation decreases at very low frequencies. The other is synchrotron self-absorption. While the synchrotron self-absorption is determined from detailed balance, cyclotron turnover occurs when the assumptions of synchrotron radiation are violated. When a charged particle moves in a magnetic field, its orbit is a helix, and its velocities can be divided into two independent components: uniform velocity parallel to the axis of the helix and rotation about the axis. Synchrotron radiation requires that both velocities be ultra-relativistic, but if the velocity parallel to the axis is relativistic and the rotation is not, then the spectrum would simply be that of a Doppler-shifted cyclotron radiation, and this behavior is called cyclotron turnover. In real systems there would be a competition between these two phenomena, so the only one that sets in at higher frequencies will be observed. An interesting feature about the cyclotron turnover is that it allows emission at frequencies lower that the cyclotron frequency, if the particle is moving away from the observer. (en)
dbo:wikiPageID	42714482 (xsd:integer)
dbo:wikiPageLength	1554 (xsd:nonNegativeInteger)
dbo:wikiPageRevisionID	1016770758 (xsd:integer)
dbo:wikiPageWikiLink	dbr:Electric_charge dbr:Detailed_balance dbr:Cyclotron_radiation dbr:Ultrarelativistic_limit dbr:Magnetic_field dbr:Spectrum dbr:Helix dbc:Electromagnetic_radiation dbr:Synchrotron_radiation dbr:Doppler_shift dbr:Cyclotron_frequency
dbp:wikiPageUsesTemplate	dbt:Reflist
dcterms:subject	dbc:Electromagnetic_radiation
gold:hypernym	dbr:Phenomena
rdfs:comment	Cyclotron turnover is one of two phenomena due to which the power spectrum of synchrotron radiation decreases at very low frequencies. The other is synchrotron self-absorption. While the synchrotron self-absorption is determined from detailed balance, cyclotron turnover occurs when the assumptions of synchrotron radiation are violated. When a charged particle moves in a magnetic field, its orbit is a helix, and its velocities can be divided into two independent components: uniform velocity parallel to the axis of the helix and rotation about the axis. Synchrotron radiation requires that both velocities be ultra-relativistic, but if the velocity parallel to the axis is relativistic and the rotation is not, then the spectrum would simply be that of a Doppler-shifted cyclotron radiation, and (en)
rdfs:label	Cyclotron turnover (en)
owl:sameAs	freebase:Cyclotron turnover wikidata:Cyclotron turnover https://global.dbpedia.org/id/fyeN
prov:wasDerivedFrom	wikipedia-en:Cyclotron_turnover?oldid=1016770758&ns=0
foaf:isPrimaryTopicOf	wikipedia-en:Cyclotron_turnover
is foaf:primaryTopic of	wikipedia-en:Cyclotron_turnover

This content was extracted from Wikipedia and is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License